The Gattilusio family was the ruling dynasty of the island of Lesbos from 1355 to 1462, when the last prince was strangled on the orders of Sultan Mehmed II. A junior branch of the family ruled Ainos until 1488. The family's origin was Genoese, the founder being a mercenary who assisted John V Palaeologus regain his throne and, as means of payment, received a princedom and the hand of the Emperor's sister, Maria Palaiologina. Lesbos (Λέσβος) is a prefecture of Greece, part of the periphery North Aegean. ... Mehmed II Mehmed II, also known as Muhammed II (March 30, 1432 – May 3, 1481; nicknamed el-Fatih, the Conqueror) was the sultan of the Ottoman Empire for a short time from 1444 to 1446, and later from 1451 to 1481. ... John V Palaeologus (1332 - February 16, 1391) was the son of Andronicus III, whom he succeeded as Byzantine emperor in 1341. ...
Dorino I Gattilusio, Lord of Lesbos, married Orietta Doria and had six children: (a) Francesco III, Lord of Thasos, married a daughter of Palamede and died v.p.
Prince Rainier of Monaco is thus a 22nd generation descendant of Francesco I Gattilusio, founder of the Lesbian Gattilusii dynasty.
Note 6: At night, Gattilusio had his sailors wake the sleeping sentries, and shout (from the ships) that one of their ships had wrecked and that they (the sailors) would share the remains of the cargo with whoever would help them.